CN111219951A

CN111219951A - Green tea drying process

Info

Publication number: CN111219951A
Application number: CN201911194494.0A
Authority: CN
Inventors: 张小引
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-06-02
Anticipated expiration: 2039-11-28
Also published as: CN111219951B

Abstract

The invention discloses a green tea drying process which comprises a plurality of steps of preheating, heating and drying, wherein tea leaves flow in a single-layer movement mode all the time, and are dried step by step. This green tea stoving technology adopts the motion mode of tealeaves top-down formula, is coordinating the use of the heating and drying device of bottom for tealeaves is handled through preheating, heating and dry a plurality of steps, and tealeaves flows with the individual layer motion mode all the time, and progressive drying mode is softer, has avoided tealeaves suddenly to heat dry and causes nutrient loss or even tealeaves to suffer the problem of destruction and appear.

Description

Green tea drying process

Technical Field

The invention relates to the field of green tea processing, in particular to a green tea drying process.

Background

The drying is the last procedure of the processing of the raw tea and is one of a plurality of key procedures, the main purposes of the drying are to lose tea moisture, shape the tea, increase tea aroma and the like, the quality of the drying can be directly influenced, the temperature is the main factor influencing the drying quality in the process of drying the tea, the temperature is the condition of chemical reaction in the process of drying the tea, the thermalization plays a leading role in the process of drying the tea, and the thermalization plays an important role in the formation and development of the tea quality.

At present, along with the continuous improvement of living standard and social integral economic consumption capability, the consumption of tea is steadily increased, the demand causes that the traditional tea processing production mode cannot meet the current market, thereby various tea processing production equipment is produced, the yield of tea processing is improved to meet the market demand and simultaneously the benefit is increased, wherein, the tea processing production equipment comprises equipment for drying tea, the current tea drying machine comprises a frame, an oven with an air inlet and an air outlet arranged on the frame and a continuous transmission mechanism arranged in the oven, in order to ensure the drying quality and the tea quality, the tea is dried by layers when more tea is used, the tea is conveyed to each drying layer through a plurality of hot air channels, and the drying temperature of each layer is controlled through an air valve, thereby the drying effect of each layer is achieved, tea leaves are gradually dehydrated through different transmission layers, but the drying process of the drying equipment has problems and defects, for example, the tea leaves on each layer are waiting and the tea leaves on the upper layer are firstly overlapped in the conveying mechanism, namely the tea leaves on the upper layer can absorb moisture discharged by the tea leaves on the lower layer, the tea leaves are not dried thoroughly early, and meanwhile, the phenomenon of agglomeration of the tea leaves in the drying process can also occur in the conveying and moving process, so that the tea leaf discharging quality is influenced.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a green tea drying process, which solves the problem that the tea drying is not thorough due to the fact that tea leaves are easily stacked and are agglomerated even in the transfer movement, so that the tea quality is affected.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a green tea drying process comprises the following steps,

s1, switching on the dryer, electrifying the heating wire for heating for T minutes, and preheating each element in the inner cavity of the dryer and air;

s2, placing tea leaves to be dried into an inner cavity of a cache box;

s3, starting a driving motor, driving the conveying shaft to rotate by the driving motor through an output shaft of the driving motor, and driving the conveying belt on the conveying shaft to rotate circularly;

s4, when the conveyer belt closest to the drying and heating mechanism moves to the position of the feeding pipeline after being heated, and the tea-out strips move close to the inner wall of the feeding pipeline, one end of tea leaves is firstly extruded on the inner wall of the feeding pipeline, then the tea leaves are gradually pulled out of the feeding pipeline and fall to the area between the two tea-out strips, and the tea-out strips move continuously along with the movement of the conveyer belt and are heated and dried by hot air blown from the bottom layer;

s5, when broken tea leaves or small tea leaves exist, the tea leaves are positioned at the tea receiving hole, when the tea receiving hole is superposed with the reducing hole, the triangular bulge jacks up the conveyer belt, the tea leaves can slide to the inner cavity of the reducing hole and directly fall into the drying area of the next layer along the reducing hole, and when the rest other tea leaves move to the edge position of the conveyer belt, the tea leaves directly fall into the inner cavity of the transfer box from the transfer opening, and then continuously slide along the steering sliding pipe until the tea leaves fall onto the conveyer belt of the next layer for continuous drying;

and S6, directly conveying the tea leaves to the outside of the machine from a discharge port for collection after the drying on the conveyor belt of the last layer is finished.

Preferably, the heating wire is electrified and heated for T minutes, wherein T is 1-10 minutes.

Preferably, above-mentioned drying-machine, including stoving case, buffer case, continuous output mechanism, discharge gate, stoving heating mechanism and direction metal sheet, the right side of buffer case is passed through bolt and the left top fixed connection of stoving case, continuous output mechanism sets up the inner chamber at the stoving case, the bottom on stoving case right side is seted up to the discharge gate, stoving heating mechanism installs the bottom at the stoving incasement chamber, the direction metal sheet is installed on the inner wall of stoving case.

Continuous output mechanism is including carrying axle, driving motor, conveyer belt, connecing tea hole, transfer box and play tea strip, carry the axle through type to install the inner chamber at the stoving case, driving motor passes through the bolt and installs the front at the stoving case, the conveyer belt suit is on carrying the outer lane of axle, connect the tea hole equidistance to set up on the conveyer belt on the surface, the side of transfer box passes through the inner wall fixed connection of bolt and stoving case, it sets up on the surface at the conveyer belt to go out the tea strip equidistance, and the effect of transfer box mainly is used for turning to of each layer tealeaves, guarantees that the tealeaves of each layer all is located the conveyer belt, and two areas that go out between the tea strip are used for the tiling place of placing tealeaves.

Preferably, the bottom of buffer box is provided with charge-in pipeline, and charge-in pipeline's right side runs through the stoving case and extends to the inner chamber of stoving case, and the one end equidistance that charge-in pipeline is located the stoving incasement chamber is provided with the spacing block, exports the position with charge-in pipeline through the spacing block and cuts off, mainly can mutual noninterference in order to can be when tealeaves flows, avoids the too much tealeaves that causes of same region outflow to pile up and influence tealeaves and be heated.

Preferably, stoving heating mechanism includes intake stack, air-blower, separation sleeve pipe, heater strip and diffusion blowing mouth, intake stack's right side runs through the formula and installs in the left bottom of stoving case, the air outlet of air-blower and the detachable connection in left side of intake stack, the flange dish is passed through with intake stack's right side in the sheathed tube left side of separation and is connected, the sheathed tube inner chamber of separation is installed to the heater strip, diffusion blowing mouth's bottom and separation sheathed tube top fixed connection, separation sheathed tube existence has controlled the flow direction of cold wind, makes cold wind can be fully heated on the one hand, and on the other hand has still avoided cold wind to influence drying efficiency at the irregular motion of the inner chamber of stoving case.

Preferably, the metal guide plate is located the conveyer belt under, and the metal guide plate is in parallel state with the conveyer belt, the reduction hole has been seted up at the top of metal guide plate, the top of metal guide plate is provided with the triangle arch, and the bellied main institute of triangle lies in the conveyer belt jack-up one end distance that makes progress that will be located reduction hole position, lets garrulous tealeaves can flow into next drying zone fast, reduces the drying time of garrulous tealeaves, avoids tealeaves to be heated excessively and damages.

Preferably, the top of the transfer box is provided with equidistant transfer ports, the inner cavity of the transfer box is provided with equidistant partition plates, the bottom of the transfer box is provided with equidistant steering sliding pipes, and the bottom openings of the steering sliding pipes are all positioned above the conveying belt.

Preferably, it is flexible to go out the tea strip, it is regional between two spacers to go out the one end activity joint that the conveyer belt was kept away from to go out the tea strip, the top that goes out the tea strip is tangent with the top of charge-in pipeline inner wall, and flexible play tea strip is tangent with the charge-in pipeline inner wall, pulls out the charge-in pipeline with tealeaves one by one at the in-process of continuous motion, can not once come out too much tealeaves and cause overlapping influence heating drying quality, and flexible characteristic can not cause many damages to tealeaves when the extrusion is dragged and is dragged tealeaves.

(III) advantageous effects

The invention provides a flowing type non-leakage green tea dryer. The method has the following beneficial effects:

(1) the motion mode of adopting tealeaves top-down formula is being coordinated with the use of the heating and drying device of bottom for tealeaves is handled through preheating, heating and dry a plurality of steps, and progressive drying mode is softer, has avoided tealeaves suddenly to heat dry and has caused the nutrient to run off or even tealeaves suffers the problem of destruction and appear.

(2) Continuous output mechanism has controlled tealeaves tiling quantity when carrying tealeaves, keeps tealeaves to flow with the individual layer motion mode all the time, has avoided tealeaves to appear the stack when carrying the drying and has caused the problem that upper tealeaves heating drying is not abundant to produce and omits, has improved the play tea quality of dry tealeaves.

(3) Set up the use that the hole cooperation is being led to the hole on the continuous output mechanism, moving the in-process, when the hole coincidence on hole and the direction metal sheet of revealing, alright with the state of dealing with each other with less tealeaves card to with the direction metal sheet immediately, then directly leak to next layer drying area, reduce the time that little tealeaves received the stoving, avoid overheating to cause tealeaves to damage.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front cross-sectional view of a cache box of the present invention;

FIG. 3 is a front cross-sectional view of the drying box of the present invention;

FIG. 4 is a schematic view of the structure of the rotating box of the present invention;

fig. 5 is a schematic structural view of the drying and heating mechanism of the present invention.

In the figure: the tea drying machine comprises a drying box 1, a buffer box 2, a feeding pipeline 201, a separating sheet 202, a continuous output mechanism 3, a conveying shaft 301, a driving motor 302, a conveying belt 303, a tea receiving hole 304, a transfer box 305, a transfer port 3051, a separating plate 3052, a transfer slide pipe 3053, tea discharging strips 306, a discharging port 4, a drying and heating mechanism 5, an air inlet pipeline 501, a blower 502, a blocking sleeve 503, a heating wire 504, a diffusion blowing port 505, a metal guide plate 6, a reduced hole 601 and a triangular protrusion 602.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-5, the present invention provides a technical solution: a green tea drying process comprises the following steps,

firstly, the dryer is powered on, the heating wire 504 is powered on and heated for a period of time, each element and air in the inner cavity of the dryer 1 are preheated, then tea leaves to be heated and dried are placed in the inner cavity of the buffer box 2, finally, the driving motor 302 is directly started, the driving motor 302 drives the conveying shaft 301 to rotate through the output shaft of the driving motor, the conveying shaft 301 drives the conveying belt 303 on the conveying shaft to continuously rotate circularly, the conveying belt 303 closest to the position of the drying and heating mechanism 5 moves to the position of the feeding pipeline 201 after being heated, the temperature is certain, then when the tea strips 306 move close to the inner wall of the feeding pipeline 201, one end of the tea leaves is firstly extruded on the inner wall of the feeding pipeline 201, then the tea strips are gradually pulled out, the feeding pipeline 201 falls to the area between the two tea strips 306, and moves continuously along with the movement of the conveying belt 303, the tea leaves are positioned at the tea receiving hole 304 when the tea receiving hole 304 coincides with the reducing hole 601, the triangular protrusion 602 pushes up the conveying belt 303 upwards, the tea leaves can slide to the inner cavity of the reducing hole 601 and directly fall into the drying area of the next layer along the reducing hole 601, when the rest of the tea leaves move to the edge of the conveying belt 303, the tea leaves directly fall from the transfer port 3051 into the inner cavity of the transfer box 305 and then continuously slide along the turning sliding pipe 3053 until the tea leaves fall onto the conveying belt 303 of the next layer for continuous drying, and after the drying on the conveying belt 303 of the last layer is finished, the tea leaves are directly conveyed out of the machine from the discharge port 4 for collection.

The dryer comprises a drying box 1, a buffer box 2, a continuous output mechanism 3, a discharge port 4, a drying and heating mechanism 5 and a guide metal plate 6, wherein the right side of the buffer box 2 is fixedly connected with the top of the left side of the drying box 1 through a bolt, the continuous output mechanism 3 is arranged in an inner cavity of the drying box 1, the discharge port 4 is arranged at the bottom of the right side of the drying box 1, the drying and heating mechanism 5 is arranged at the bottom of the inner cavity of the drying box 1, the guide metal plate 6 is arranged on the inner wall of the drying box 1, the continuous output mechanism 3 comprises a conveying shaft 301, a driving motor 302, a conveying belt 303, tea receiving holes 304, a transfer box 305 and tea discharging strips 306, the conveying shaft 301 is arranged in the inner cavity of the drying box 2 in a penetrating manner, the driving motor 302 is arranged on the front surface of the drying box 1 through bolts, the conveying belt 303 is sleeved on the outer, the side surface of the transfer box 305 is fixedly connected with the inner wall of the drying box 1 through bolts, the tea strips 306 are arranged on the surface of the conveying belt 303 at equal intervals, the transfer box 305 is mainly used for steering each layer of tea leaves, the tea leaves of each layer are ensured to be positioned on the conveying belt 303, the area between the two tea strips 306 is a place for flatly laying the tea leaves, the bottom of the cache box 2 is provided with a feeding pipeline 201, the right side of the feeding pipeline 201 penetrates through the drying box and extends to the inner cavity of the drying box 1, one end of the feeding pipeline 201, which is positioned in the inner cavity of the drying box 1, is provided with partition sheets 202 at equal intervals, the feeding pipeline 201 is cut at the outlet position through the partition sheets 202, the mutual interference can be avoided mainly when the tea leaves flow out, the phenomenon that the tea leaves flow out from the same area too much to cause the accumulation and influence on the heating of, The drying box comprises a separation sleeve 503, a heating wire 504 and a diffusion blowing port 505, wherein the right side of an air inlet pipe 501 is installed at the bottom of the left side of the drying box 1 in a penetrating mode, an air outlet of an air blower 502 is detachably connected with the left side of the air inlet pipe 501, the left side of the separation sleeve 503 is connected with the right side of the air inlet pipe 501 through a flange plate, the heating wire 504 is installed in an inner cavity of the separation sleeve 503, the bottom of the diffusion blowing port 505 is fixedly connected with the top of the separation sleeve 503, the flow direction of cold air is controlled by the existence of the separation sleeve 503, on one hand, the cold air can be sufficiently heated, on the other hand, the drying efficiency is prevented from being influenced by irregular movement of the cold air in the inner cavity of the drying box 1, a metal guide plate 6 is positioned under a conveying belt 303, the metal guide plate 6 and the, the triangular bulge is mainly used for jacking up one end of the conveyer belt 303 positioned at the position of the reducing hole 601 to enable broken tea leaves to flow into the next drying area quickly, so that the drying time of the broken tea leaves is reduced, and the damage of the tea leaves due to excessive heating is avoided, the top of the transfer box 305 is provided with a transfer port 3051 at equal intervals, the inner cavity of the transfer box 305 is provided with partition plates 3052 at equal intervals, the bottom of the transfer box 305 is provided with steering sliding pipes 3053 at equal intervals, the bottom openings of the steering sliding pipes 3053 are all positioned above the conveyer belt 302, the tea outlet bars 306 are flexible bars, one end of the tea outlet bars 306 far away from the conveyer belt 302 is movably clamped between two blocks 202 in the area, the top of the tea outlet bars 306 is tangent to the top of the inner wall of the feeding pipeline 201, the flexible tea outlet bars 306 are tangent to the inner wall of the feeding pipeline 201, the tea leaves are pulled out of the feeding pipeline one by one, the flexible characteristic can not cause much damage to the tea when the tea is squeezed and pulled.

In conclusion, the green tea drying process adopts a tea leaf top-down type movement mode, and is matched with the use of a heating and drying device at the bottom, so that tea leaves are processed through a plurality of steps of preheating, heating and drying, the gradual drying mode is softer, the problem that the tea leaves are damaged due to nutrient loss and even the tea leaves are damaged due to the sudden heating and drying of the tea leaves is solved, the continuous output mechanism controls the flat spreading quantity of the tea leaves when conveying the tea leaves, the tea leaves are kept to flow in a single-layer movement mode all the time, the problem that the tea leaves at the upper layer are not sufficiently heated and dried due to the superposition when conveying and drying the tea leaves is avoided, the tea outlet quality of the dried tea leaves is improved, a plurality of leakage holes are formed in the continuous output mechanism and matched with the guide metal plate, and when the leakage holes are overlapped with the holes in the guide metal plate in the moving, can be immediately with less tealeaves card to the state of handling each other with the direction metal sheet, then directly leak to next layer drying area, reduce the time that little tealeaves received the stoving, avoid overheating to cause tealeaves to damage.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A green tea drying process is characterized in that: comprises the following steps of (a) carrying out,

s1, switching on the dryer, electrifying and heating the heating wire (504) for T minutes, and preheating each element in the inner cavity of the dryer (1) and air;

s2, placing tea leaves to be dried into the inner cavity of the buffer box (2);

s3, starting a driving motor (302), wherein the driving motor (302) drives a conveying shaft (301) to rotate through an output shaft of the driving motor, and the conveying shaft (301) drives a conveying belt (303) on the conveying shaft to rotate circularly;

s4, when the conveyer belt (303) closest to the drying and heating mechanism (5) is heated and moves to the position of the feeding pipeline (201), and the tea discharging strips (306) move along the inner wall of the feeding pipeline (201), one end of tea leaves is firstly extruded on the inner wall of the feeding pipeline (201), then the tea leaves are gradually pulled out of the feeding pipeline (201) and fall to the area between the two tea discharging strips (306), and the tea discharging strips are heated and dried by receiving hot air blown from the bottom layer along with the continuous movement of the conveyer belt (303);

s5, when broken tea leaves or small tea leaves exist, the tea leaves are positioned at the position of the tea receiving hole (304), when the tea receiving hole (304) is overlapped with the reduced hole (601), the triangular bulge (602) pushes up the conveyer belt (303) upwards, the tea leaves can slide to the inner cavity of the reduced hole (601), and directly fall into the drying area of the next layer along the reduced hole (601), when the rest tea leaves move to the edge position of the conveyer belt (303), the tea leaves directly fall from the transfer port (3051) into the inner cavity of the transfer box (305), and then continuously slide along the transfer sliding pipe (3053) until the tea leaves fall onto the conveyer belt (303) of the next layer to be dried continuously;

and S6, after the drying on the conveying belt (303) of the last layer is finished, directly conveying the tea leaves to the outside of the machine from the discharge port (4) for collection.

2. The green tea drying process according to claim 1, characterized in that: the heating wire (504) is electrified and heated for T minutes, wherein T is 1-10 minutes.

3. The green tea drying process according to claim 1, characterized in that: the dryer comprises a drying box (1), a buffer box (2), a continuous output mechanism (3), a discharge port (4), a drying and heating mechanism (5) and a guide metal plate (6), wherein the right side of the buffer box (2) is fixedly connected with the top of the left side of the drying box (1) through a bolt, the continuous output mechanism (3) is arranged in an inner cavity of the drying box (1), the discharge port (4) is arranged at the bottom of the right side of the drying box (1), the drying and heating mechanism (5) is arranged at the bottom of the inner cavity of the drying box (1), and the guide metal plate (6) is arranged on the inner wall of the drying box (1);

continuous output mechanism (3) including carrying axle (301), driving motor (302), conveyer belt (303), connecing tea hole (304), transfer box (305) and play tea strip (306), carry axle (301) run-through type to install the inner chamber at stoving case (2), driving motor (302) pass through the bolt and install the front at stoving case (1), conveyer belt (303) suit is on the outer lane of carrying axle (301), connect tea hole (304) equidistance to set up on the surface of conveyer belt (303), the side of transfer box (305) passes through the inner wall fixed connection of bolt and stoving case (1), it sets up on the surface of conveyer belt (303) to go out tea strip (306) equidistance.

4. The green tea drying process according to claim 3, characterized in that: the bottom of the buffer box (2) is provided with a feeding pipeline (201), the right side of the feeding pipeline (201) penetrates through the drying box and extends to the inner cavity of the drying box (1), and separating sheets (202) are arranged at equal intervals at one end, located in the inner cavity of the drying box (1), of the feeding pipeline (201).

5. The green tea drying process according to claim 3, characterized in that: stoving heating mechanism (5) are including air-supply line (501), air-blower (502), separation sleeve pipe (503), heater strip (504) and diffusion mouth (505) of blowing, the right side of air-supply line (501) is run through the formula and is installed in the left bottom of stoving case (1), the air outlet of air-blower (502) is connected with the left side of air-supply line (501) is detachable, the left side of separation sleeve pipe (503) is passed through the ring flange with the right side of air-supply line (501) and is connected, the inner chamber at separation sleeve pipe (503) is installed in heater strip (504), the bottom of diffusion mouth (505) of blowing and the top fixed connection of separation sleeve pipe (503).

6. The green tea drying process according to claim 3, characterized in that: the metal guide plate (6) is located under conveyer belt (303), and metal guide plate (6) and conveyer belt (303) are in parallel state, reduction hole (601) have been seted up at the top of metal guide plate (6), the top of metal guide plate (6) is provided with triangle arch (602).

7. The green tea drying process according to claim 3, characterized in that: the top of transfer box (305) is equidistant transit mouthful (3051), baffle (3052) are installed to the inner chamber equidistance of transfer box (305), the bottom equidistance of transfer box (305) is installed and is turned to slide tube (3053), and the bottom opening that turns to slide tube (3053) all is located the top of conveyer belt (302).

8. The green tea drying process according to claim 3, characterized in that: the tea discharging strip (306) is a flexible strip, one end, far away from the conveying belt (302), of the tea discharging strip (306) is movably clamped in the area between the two partition sheets (202), and the top of the tea discharging strip (306) is tangent to the top of the inner wall of the feeding pipeline (201).